Mother Jones’s interactive map showing U.S. military presence worldwide from 1950 to 2007 is making the rounds online. But it’s a little misleading: it’s a heat map, but its scale is logarithmic, which tends to overemphasize smaller numbers. Trends, if any, are hard too see. And sometimes the numbers in question are in the low double digits — are we mostly mapping embassy personnel? Via Boing Boing.